Continuity mistake: When we see the Monsoon Palace from the lake, it is set very high on a barren brown mountain. When Bond escapes on foot, he very quickly is in a dense and moist jungle - and walking out in a low-lying marsh land with a wide river. That can't be the same lake, since we don't see him running down a steep barren cliff-side.
Plot hole: When Bond wakes up in the monsoon palace, his watch is still beeping with the activated tracking mode. Wouldn't somebody have noticed the constant beeping while he was brought there? The tracker is shown to have a range of several hundred meters, so it would certainly have been in range of the transmitter at least part of the time while Gobinda dragged him back to Kamal's palace.
Revealing mistake: When the plane comes out of the horse box you can see that the undercarriage is fixed and that the wheels cannot retract like they do in the next scene. This version of the plane is the same one at the petrol station where the controls are the same as a motorbike with handlebars and a throttle, steering was done using the front wheel.
Audio problem: In the opening scene, Bianca says to Bond, "They moved the flight up to this afternoon", but her mouth does not match what she is saying.
Revealing mistake: When Grischka pins Bond to the cabin door with his knives, he takes out a knife and attempts to kill Bond for killing his twin brother. Bond then opens the cabin door and then kills Grischka by opening the cabin door and throwing a knife into his stomach. If you watch carefully, you can see the cabin door begin to open before Bond pulls the cabin handle down.
Continuity mistake: During the pre-credits sequence, Bond pulls the ripcords on the parachutes of the two guards who are in the truck with him and the guard on the right is holding a rifle in his right hand, but when he is flying in the air in the next shot, the rifle has gone.
Continuity mistake: When Bond is fighting Gobinda on the roof of the train carriage, Grischka appears and you can see from behind he puts his left hand on the roof, but when the camera angle changes in the next shot, Grischka now has his right hand on the roof.
Factual error: When Bond is fighting with Glenda on the wagon roof, shortly before passing a tunnel, which is supposed to be already in West Germany, a communist slogan is visible on the tunnel entry, stating 'Our contribution to a positive balance: daily fulfillment of the plan'. Not something that would be on the west side.
Continuity mistake: Bond arrives in West Berlin to travel to Karl-Marx-Stadt. The Mercedes stops just before Checkpoint Charlie and the other guy gets out of the car. One can see the license plate - which appears to be genuine German (DIN font and spacing etc). When the "same" car later arrives at the Circus the plates are obviously props. The font is off and the plates are obviously fake.